diaphragm Flashcards
1
Q
diaphragm origins
A
- costal
- sternal
- vertebral
2
Q
costal origin
A
lower 6 ribs
3
Q
sternal origin
A
back of xiphoid process
4
Q
vertebral origin
A
2 crura
- right crus: bodies of L1,2,3
- left crus: bodies of L1,2
5
Q
arcuate ligaments
A
- medial
- median
- lateral
6
Q
medial arcuate ligament
A
- from body of L1 > tr. process of L1
* transmits psoas major and sympathetic chain
7
Q
median arcuate legament
A
- in median plane
- connects 2 crura
- transmits aorta
8
Q
lateral arcuate ligament
A
- from tr. process of L1> 12th rib
* transmits quadratus lumborum and subcostal nerve and vessels
9
Q
nerve supply of diaphragm
A
- motor: phrenic nerve (C3,4,5 but mainly C4)
* sensory: phrenic nerve & intercostal nerves
10
Q
arterial supply of diaphragm
A
- musculophrenic
- post. intercostal
- descending aorta
- pericardiacophrenic
- sup. & inf. phrenic
11
Q
insertion of diaphragm
A
central tendon (related to the pericardium sup.)
12
Q
right copula relations
A
- rt lobe of liver
- rt kidney
- rt supra renal
13
Q
left copula relations
A
- lt lobe liver
- lt kidney
- lt supra renal
- spleen & stomach
14
Q
major openings of the diaphragm
A
- venacaval
- esophageal
- aortic
15
Q
venacaval opening
A
*T8
* 1 inch to the right
* in central tendon
*IVC
right phrenic
lymphatics from liver
16
Q
esophageal opening
A
- T10
- 1 inch to the left
- in right crus
- esophagus
gastric nerves
esophageal vessels
17
Q
aortic opening
A
- T12
*median plane - aorta
thoracic duct
azygous vein
18
Q
actions of diapharm
A
- main muscle of respiration
* increase intra abdominal pressure
